Biohazard Founder Billy Graziadei Is A BJJ Black Belt: “I Love Training”
Jun 09, 2026BJJEE1 Admin
Billy Graziadei, founding member of Biohazard and a longtime Jiu-Jitsu practitioner, recently spoke with UFC Hall of Famer Matt Serra about the role Jiu-Jitsu has played throughout his life and...
